[Gambas-user] Adding Classes to Collections... we can't do this?

[Benoit Minisini]

On Monday 30 May 2005 00:22, sbungay wrote:
>    OK, I'm coming from the VB 6.0 world and I know I know this is not
> VB... I have a question anyway about adding classes to collections. Um..
> why can't we do this? So far al I can do is add each item in the class
> to the collection... but that is a royal pain in the butt. What I want
> to do is something like this.
>
> '*********** BEGIN SAMPLE CODE ***************************************
> '*** This does not work...
> Dim MyCollection as New Collection
>
> ' The Class has two integer values in it.. X and Y (just for example)
> Dim MyClass as XYClass
>
> MyClass = new XYClass
>
> With MyClass
>       .X = 10
>       .Y = 10
> End With
>
> MyCollection.Add(MyClass)
>
> MyClass = NULL  ' Is this equiv. to the VB "Set MyClass = Nothing"
>
>
> '*** This DOES work but is kludgy
> Dim MyCollection as New Collection
>
> ' The Class has two integer values in it.. X and Y (just for example)
> Dim MyClass as XYClass
>
> MyClass = new XYClass
>
> With MyClass
>       .X = 10
>       .Y = 10
> End With
>
> MyCollection.Add(MyClass.X, MyClass.Y)
>
> MyClass = NULL  ' Is this equiv. to the VB "Set MyClass = Nothing"
>
>
> '*********** END SAMPLE CODE ***************************************
>
>    Now froma programming standpoint I like the first way better because
> I  simply add the created class to the collection. Wonderful, less
> typing for me.
>    Does the problem stem from collection only being able to hold Variant
> types?
>

Gambas Collections are not exactly like in VB. The first argument of Add() is 
the key, the second is the value. They are both mandatory, contrary to VB.

If you don't need a key, then use an array instead of a Collection:
--> Dim MyCollection as New Object[]

Regards,

-- 
Benoit Minisini
mailto:gambas at ...1...